OBJECTIVES Finding the area of a circle A. Content Standards demonstrates understanding

of area, volume and temperature.

demonstrates understanding of area, volume and

temperature.

demonstrates understanding of area, volume and

temperature.

demonstrates understanding of area, volume and

temperature.

Weekly test

B. Performance Standards is able to apply knowledge of area, volume and

temperature in mathematical problems and real-life situations.

is able to apply knowledge of area, volume and

temperature in mathematical problems and real-life situations.

is able to apply knowledge of area, volume and

temperature in mathematical problems and real-life situations.

is able to apply knowledge of area, volume and

temperature in mathematical problems and real-life situations.

C. Learning

Competencies/Objectives Write the LC code for each

finds the area of a given circle.

M5ME-IVa-74

finds the area of a given circle.

M5ME-IVa-74

solves routine and non-routine problems involving the area of a circle.

M5ME-IVb-75

solves routine and non-routine problems involving the area of a circle.

M5ME-IVb-75

II. CONTENT Measurment Measurment Measurment Measurment

III. LEARNING RESOURCES A. References

1. Teacher’s Guide pages

2. Learner’s Material pages

3. Textbook pages XL Excelling in Mathematics 5 M5ME –Iva 74

XL Excelling in Mathematics 5 M5ME –Iva 74

M5M-IVb-75

Growing up with Math 5 pages 299-301

Ateneo Lesson Guide pages 382-386

M5M-IVb-75

Growing up with Math 5 pages 299-301

Ateneo Lesson Guide pages 382-386

4. Additional Materials from Learning Resource (LR) portal

B. Other Learning Resources chart, ruler, real circle objects chart, ruler, real circle objects cutouts of circles, chart, flashcards, real objects

cutouts of circles, chart, flashcards, real objects IV. PROCEDURES

A. Reviewing previous lesson or presenting the new lesson

Have a review on solving

problems involving

circumference of a circle.

Review the formula, give examples, and then give exercises for the pupils to do.

Have a review on solving

problems involving

circumference of a circle.

Review the formula, give examples, and then give exercises for the pupils to do.

Checking of Assignment Identify the parts of a circle Review the steps in solving word problems.

Checking of Assignment Identify the parts of a circle Review the steps in solving word problems.

B. Establishing a purpose for the lesson

Manipulate and measure the diameter and radius of the circle

Find enjoyment in doing the activity

Manipulate and measure the diameter and radius of the circle

Find enjoyment in doing the activity

Solves routine and non-routine problems involving the area of a circle

Solves routine and non-routine problems involving the area of a circle

C. Presenting

examples/instances of the new lesson

Show real circular objects, ask them to give examples of circular things, ask them how circle differ from other objects?

Show real circular objects, ask them to give examples of circular things, ask them how circle differ from other objects?

Name any round objects inside the classroom or any round object that you brought. Show the diameter and the radius.

Name any round objects inside the classroom or any round object that you brought. Show the diameter and the radius.

D. Discussing new concepts and practicing new skills

#1

Present a problem.

Every time it rains, Mrs.Flores saves water in a big clay jar called “Tapayan”. She covers them with a circular galvanized iron with a radius of 5 dm. What is the area of the circular cover?

Ask: How will you solve for the problem?

Look at the figure of the circle.

Explain to the pupils that the ratio of the circumference of a circle to the diameter is the same for all circles. The circumference of any circle is about 3.14 times the diameter. The ratio is represented by the Greek

letter

π

spelled pi and pronounced as pie.

Let the pupils find the area

A =

π

_r²

= 3.14 x 5 x 5 = 3.14 x 25 Area = 78.50 dm²

Present a problem.

Every time it rains, Mrs.Flores saves water in a big clay jar called “Tapayan”. She covers them with a circular galvanized iron with a radius of 5 dm. What is the area of the circular cover?

Ask: How will you solve for the problem?

Look at the figure of the circle.

Explain to the pupils that the ratio of the circumference of a circle to the diameter is the same for all circles. The circumference of any circle is about 3.14 times the diameter. The ratio is represented by the Greek

letter

π

spelled pi and pronounced as pie.

Let the pupils find the area

A =

π

_r²

= 3.14 x 5 x 5 = 3.14 x 25 Area = 78.50 dm²

Present the situation under Explore and Discover on page ___, LM Math Grade 5.

Discuss the situation with the class.

Present the situation under Explore and Discover on page ___, LM Math Grade 5.

Discuss the situation with the class.

E. Discussing new concepts and practicing new skills

#2

Group the pupils into six to eight members per group.

Distribute cut outs of circle with dimensions and let the pupils find the area.

Call as many pupils to solve for the area of the circle on the board.

Group the pupils into six to eight members per group.

Distribute cut outs of circle with dimensions and let the pupils find the area.

Call as many pupils to solve for the area of the circle on the board.

Divide the class into four groups and instruct them to bring out the materials that they brought like paper plate, ice cream cup cover or any round object. Let the pupils measure the diameter. Divide the diameter by 2 to get the radius. Tell the pupils that the value of π is approximately 3.14 and that the formula in finding the area of a circle is

A= π

r

²

Solve for the area of the circle. Ask the leader to report their answers.

Divide the class into four groups and instruct them to bring out the materials that they brought like paper plate, ice cream cup cover or any round object. Let the pupils measure the diameter. Divide the diameter by 2 to get the radius. Tell the pupils that the value of π is approximately 3.14 and that the formula in finding the area of a circle is

A= π

r

²

Solve for the area of the circle. Ask the leader to report their answers.

F. Developing mastery

(Leads to Formative Assessment 3)

After the presentations of each group, ask: how did you find the activity? Did you able to find the area of the circle?

What value is developed in performing the activity?

Expected Answers:

Happy and curious

After the presentations of each group, ask: how did you find the activity? Did you able to find the area of the circle?

What value is developed in performing the activity?

Expected Answers:

Happy and curious

After the presentation of the groups, ask:

How did you find the activity?

How did you go about the task?

What did you do with the objects before getting their areas?

How did you solve the area?

After the presentation of the groups, ask:

How did you find the activity?

How did you go about the task?

What did you do with the objects before getting their areas?

How did you solve the area?

Yes by solving the area of a circle using the given formula Cooperation and camaraderie

Yes by solving the area of a circle using the given formula Cooperation and camaraderie G. Finding practical

applications of concepts and skills in daily living

Ask the pupils to answer the activity under Get Moving on page ___ LM Math Grade V.

Ask them also to answer the activity under Keep Moving on page ____ LM Math Grade V.

Ask the pupils to answer the activity under Get Moving on page ___ LM Math Grade V.

Ask them also to answer the activity under Keep Moving on page ____ LM Math Grade V.

Say: Let us solve more problems. Ask pupils to do the exercises by pairs under Get Moving on pages _____

of LM Math 5. Check the pupils’ answers.

Say: Let us solve more problems. Ask pupils to do the exercises by pairs under Get Moving on pages _____

of LM Math 5. Check the pupils’ answers.

H. Making generalizations and abstractions about the lesson

Lead the pupils to give the

In document GRADE 5 Mathematics DLL Whole Year Grade 5 (Page 186-190)